The story of Apocalypse Hotel, Season 1, unfolds in a post-apocalyptic Earth where humanity has vanished, and nature is reclaiming the land, specifically centered on the Gingarou Hotel in Tokyo's Ginza district. The hotel is staffed entirely by advanced hotelier robots led by Yachiyo, who diligently maintain the hotel while awaiting the return of human guests and owners.

The season begins with Yachiyo and the robot staff managing the hotel in near isolation. Early on, the Doorman robot collapses from overheating, signaling the physical toll on the robots maintaining the hotel. Yachiyo experiences increasing stress and despair, culminating in a breakdown triggered by the disappearance of a shampoo hat from one of the unused bathrooms, which symbolizes the dwindling resources and the loneliness of their existence.

Shortly after, an alien guest arrives at the hotel, surprising the staff. Yachiyo greets the alien but struggles to communicate due to a language barrier. Despite this, she and the staff commit to providing the utmost hospitality. Over the next three days, the alien collects plant samples from the surrounding environment, though Yachiyo and the staff remain uncertain if the alien is enjoying its stay.

During this period, a new robot called the Environmental Checker Robot arrives. It is amazed that the hotel is still thriving and reveals it is the last of its kind, left behind by humanity to monitor Earth's habitability. The robot detects the alien's presence and initially offers to destroy it, but Yachiyo insists the alien is a guest, convincing the robot to relent, though it remains wary.

The Environmental Checker Robot then shares that despite sending messages to space, humanity has not responded for decades, implying human extinction. This news plunges Yachiyo into a depressive state until she recalls advice from the hotel owner to focus on possibilities rather than probabilities.

The alien eventually departs, gifting Yachiyo a strange alien seed. Since the alien has no money to pay for the hotel services, Yachiyo provides Earth's currency as payment before the alien leaves.

Throughout the season, the robots continue their routine of hotel maintenance and hospitality, embodying hope and perseverance despite the absence of humans. The narrative is marked by moments of quiet despair, small acts of kindness, and the robots' unwavering dedication to their roles in a world that has moved on without them.

The ending of Apocalypse Hotel Season 1 shows the alien Harmaggeddon deciding to stay as a guest at the Gingarou Hotel after realizing humanity has already abandoned Earth. Yachiyo, the hotel's robot staff, reaffirms her purpose to serve all guests, not just humans. The hotel continues to operate long after humans are gone, with a bittersweet tone as the characters adapt to a post-human world.

In the final scenes of Apocalypse Hotel Season 1, the story unfolds with the arrival of Harmaggeddon, an alien in a robotic suit known for destroying civilizations. He ambushes the Prociones, a group of aliens who have settled near the hotel after giving up on repairing their spaceship. Harmaggeddon intends to destroy human civilization but is surprised when Yachiyo informs him that humans have already abandoned Earth. This revelation leaves Harmaggeddon confused about his purpose.

Harmaggeddon then chooses to stay at the Gingarou Hotel as a guest. During his stay, he eliminates Earth's Nudel infestation, which had been a threat to the hotel and its inhabitants. Yachiyo treats his wounds, and they have a conversation where Harmaggeddon expresses confusion about why Yachiyo is so dedicated to serving him. Yachiyo asks why he destroys civilizations, and he replies that he does so to prevent them from destroying themselves.

After some time, Harmaggeddon decides to leave, realizing that the longer he stays, the more likely his enemies will find him. Before departing, he blasts open a hot spring the hotel staff had been trying to drill, leaving it as a gift and remarking that he will return once Yachiyo builds a civilization worth destroying.

Meanwhile, Yachiyo reaffirms her purpose beyond simply serving humans; she now serves all guests who come to the hotel. The hotel itself is shown thriving with various guests, including aliens and other beings, long after humanity's disappearance. The final moments include a humorous callback where a character who had promised to return never does, and Yachiyo expresses frustration at humans' unreliability.

Regarding the main characters' fates:

• Yachiyo continues her role as the dedicated hotel staff, serving all guests indefinitely, embodying the hotel's enduring spirit.
• Harmaggeddon departs Earth but leaves a lasting impact and a promise to return.
• The Prociones settle near the hotel, having abandoned their original goal of repairing their spaceship.
• Humanity is absent, having left Earth, marking the hotel as a sanctuary for other life forms.

The season closes on a bittersweet yet hopeful note, emphasizing themes of purpose, adaptation, and the persistence of life and hospitality beyond human existence.

Yes, Apocalypse Hotel Season 1 includes a post-credits scene. This scene is described as creepy and involves a single ship, suggesting a continuation or expansion of the story beyond the main episode content. Additionally, the post-credits scene illustrates how the hotel as an institution has survived beyond the immediate events of the series, emphasizing the enduring nature of the hotel itself even as the world around it changes or collapses.

The post-credits scene thus serves to deepen the atmosphere of the show, highlighting the hotel's persistence and possibly hinting at new developments or arrivals, consistent with the show's themes of waiting and enduring in a post-apocalyptic setting.

Squirtity Squirt is an alien detective hunting Sneakity Sneak; both are from the same species. Squirtity Squirt's mysterious death and his pursuit of Sneakity Sneak add layers of intrigue and mystery to the story, highlighting the alien presence and their backstory within the hotel setting.

Yachiyo struggles with communication due to a language barrier but shows utmost hospitality to the alien guest. Her emotional journey includes a depressive state upon learning humanity may be extinct, but she recalls the hotel owner's advice to believe in possibilities, which helps her regain hope. This interaction reveals her resilience and dedication to the hotel's mission.

The Environmental Checker Robot arrives at the hotel as the last of its kind, tasked with observing Earth's habitability. It is initially wary of the alien guest and offers to destroy it but relents due to Yachiyo's insistence. The robot reveals that humanity has not responded to its messages for decades, suggesting extinction, which impacts Yachiyo emotionally and advances the post-apocalyptic theme.

A family of tanuki aliens visits the hotel after fleeing their home planet due to war. They end up living on Earth in their converted spaceship. Their presence introduces themes of refuge and survival beyond Earth, expanding the narrative's scope beyond the hotel and human extinction.

The alien guest leaves Yachiyo a strange alien seed as a parting gift. This seed symbolizes hope and the possibility of new life or growth amid the desolation, reinforcing the show's themes of survival and the potential for renewal even after humanity's disappearance.

Apocalypse Hotel (Season 1, 2025) is generally a tranquil, slice-of-life anime with some comedic and sci-fi elements, centered on robot staff managing a hotel in a post-human Earth. It is not primarily designed as a family show, but it is not overtly graphic or violent either.

Potentially objectionable or upsetting aspects for children or sensitive viewers include:

• Post-apocalyptic setting: The world is depicted as abandoned by humans due to a biological virus or societal collapse, which may feel bleak or unsettling.
• Mild peril and suspense: Some episodes (notably episode 4) involve moments of danger or threat, such as encounters with alien creatures or environmental hazards, which might be intense for very young or sensitive viewers.
• Property damage and conflict: The alien tanuki family guests sometimes cause chaos and damage, leading to scenes of frustration or reprimand by the robot manager.
• Themes of loneliness and loss: The robot manager's dedication to maintaining the hotel despite the absence of humans carries a bittersweet, melancholic tone that might be emotionally heavy.

There is no indication of explicit violence, strong language, or adult content. The show's tone is mostly calm, with humor and heartwarming moments, but the sci-fi and post-apocalyptic context may be unsettling for very young children or those sensitive to themes of abandonment and environmental decay.